is there any other way that the html code wants to call php, other than submit form submission?
<?php
function request(){
}
?>
<html id="html">
<button id="btn_click" onclick="request1()">click</button>
</html>
<script type="text/javascript">
function request1(){
document.write("<h1></h1>");
console.log("asdas");
}
</script>
cannot be called on your page. Js is a browser scripting language and php is a server language. You can't see your PHP code at all when you open the page. You can try ajax event data interaction.
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